package com.hh.springcloud.controller;

import com.hh.springcloud.lb.LoadBalancer;
import com.hh.springcloud.entities.CommonResult;
import com.hh.springcloud.entities.Payment;
import com.sun.org.apache.xalan.internal.xsltc.compiler.Template;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

@RestController
@Slf4j
public class OrderController {
    //public static final String PAYMENT_URL = "http://localhost:8001";
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    //实现两个服务之间的调用 restTemplate
    @Resource
    private RestTemplate restTemplate;
    @Resource
    private DiscoveryClient discoveryClient;
    @Resource
    private LoadBalancer loadBalancer;
    @GetMapping("/consumer/payment/create")
    public CommonResult<Template> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
    }
//    @GetMapping("/consumer/payment/create")
//    public ResponseEntity<CommonResult> create2(Payment payment){
//        return restTemplate.postForEntity(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
//    }



    //---------------------------------------------------------------------------
    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Template> getPayment(@PathVariable("id") Long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }
    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult<Template> getPayment2(@PathVariable("id") Long id){
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else{
            return new CommonResult(444,"操作失败");
        }
    }
    public String getPaymentLB(){
       List<ServiceInstance> instances = discoveryClient.getInstances("CLOUR-PAYMENT-SERVICE");

       if(instances == null || instances.size() <= 0){
           return null;
       }
       ServiceInstance serviceInstance = loadBalancer.instance(instances);
       URI uri = serviceInstance.getUri();
       return restTemplate.getForObject(uri+"/payment/lb",String.class);
    }

}

